Gas burner



Feb. 6, 1945. DEWEY 2,368,646

GAS BURNER Filed April 1o, 194s Mw. l

- product.

atented Feb. '5, 1945 STATES PATE? erica 6 Claims.

The present invention is directed to the structure and formation of a gas burner in such a way as to simplify and facilitate the fabrication of the Iburner and permit the body. thereof to be constructed in two sections which may be readily united without the employment of extraneous fastening means.

The body portion of the burner as shown is of ring-shaped formation and consists of upper. and lower sections, thelformer of which is' preferably produced by a die castingoperation, and the latter .by a stamping operation with the parts so correlated that they may be readily assembled and united in the manner presently to be described. The body portion of the burner provides a mounting for the intake duct for gas and air which, when the body sections are assembled, will be'clamped and held rigidly in position without the employment of extraneous fastenings, so that the burner as va whole may Ibe cheaply and readily manufactured and assembled in such a way as to insure uniformity in the resulting Further objects and detailswill appear from `a. description of the invention in conjunction with the accompanying drawing wherein,

Figure 1 is a top plan view of the burner asv a l whole;

Fig.,2 is a section taken on line 2-2 of Fig. 1 looking in the direction of thearrows;

Fig. 3 is across-sectional view ofthe body of l'the burner taken on line 3- 3 of Fig. 1 looking in the direction of the arrows;

Fig. 4 is a sectional view taken on line 4 4 of Fig. 1 locking in the direction of the arrows; and Fig. 5 is a face view of the end of the duct for the gas-air mixture. i

' The .body of the burner is ofA ring-shaped formation and consists of an upper section l and a lower sectionll. The upper section is preferably in the form of a die casting of aluminum, while the lower section preferably'consists of an aluminum stamping. The upper section comprises a ring-shaped top wall I2 provided with inner and outer concentric rows of burner nozzles i3 and IQ which are in the form of short upstanding tubular ports integrally cast with the top wall, so that subsequent drilling, aside from a slight smoothing or reaming operation, is un'- necessary. y f The upper wall unites with innerA and outer depending cylindrical walls l and I6 having outwardly protruding anges l1 and I8 around their lower margins. This configuration is continuous throughout the ring save at the points provided for the reception of a gas-air duct i9, the inner end of which bridges across the interior of the upper ring-shaped burner.

In order to provide for the tting of the duct;` I

the upper section of the burner on the right-hand side in Fig. 1 is provided with inner and outer half-cylindrical collars 20 and 2l which protrude away from the inner andvouter walls of the upper ybody ring, the flanges Il and I8 being interrupted at these points and merging into the collars.

Similarly, on the opposite side of the upper .body

ring, there is formed a single half-cylindrical collar 22 which interruptsand merges into the flange l?.

The gas-air duct l is in the form of a Venturi tube which at its outer or intake end is ared to provide a bell-shaped head portion 23 connecting with the body of the tuberthrough .a neck 24 toward which the body isgradua'lly tapered so that the tube progressively decreases in diameter to the base of the neck. y The opposite or inner end of the tube therefore, which is tted within the collar 22 is of slightly greater diameter than the intermediate portion of the tube which lits through the collars 20 and 2l, so that the inner diameters of the respective collars will vary to aord a close .fit around the upper surface of the tapered tube Wall.

The upper body ring unites with the lower body ring H which is of annular trough-shaped configuration comprising a circular base wall 25 -and inner and outer cylindrical walls 26 and 25a respectively. The upper margins of the inner and outenwalls are outwardly shouldered as at`21 and terminate in iianges 28 which initially extend upwardly as shown in dotted lines in Fig. 3 to permit the :fitting of the upper body ring thereto, lbut are thereafter :bent into hook formation as shown in full lines, thereby clamping the two sections together to provide a continuous annular channel interrupted only by the passage of the gas-air duct therethrough.

The walls of the lower body ring on the righthand side are interrupted to provide inner and outer half-cylindrical collars 29 and 30, theedges Yof which register with the collars 20 and 2| to provide a. fullV cylindrical, slightly tapered, passageway for the intermediate section of the gasair tube, while on the opposite side, the inner wall of the lower body ring is interrupted to provide a half-cylindrical collar 3| which registers with the upper collar 22 to provide a socket for the e dered at 34 and terminates in a flange 35 whichoriginally extends outwardly as shown in dotted lines in Fig. 2, butwhich is thereafter bent to hook-shaped formation to engage the margin of a xed shutter plate 36 which is provided with a series of segmental intake ports 31. The center of the shutter plate is outwardly protruded to provide a flanged aperture 38 for the reception of a gas tube 39. The fixed shutter plate 36 cooperates with a movable shutter 40 which is likewise cut away at Mito provide a series of segmental apertures adapted in greater or less degree to register with the apertures in the iixed shutter plates.

The movable shutter is rotatably mounted upony the center flange of the xed plate and is provided with an arcuate slot 42 through which extends a headed screw 43 carried by the xed shutter plate which permits the movable shutter to be adjusted to regulate the extent of registry of the intake ports-in the xed and movable shutters. In order to balance the intake of air when themovable shutter is adjusted to a partly closed position, I provide a pair of apertures 44 located in opposed relation to the slot 42, so that .when the slot in the movable shutter is moved to the partially open position shown in Figure 5, the apertures 44 will register with the respective opening in the inner shutter4 plate and balance the inow of air admitted through the 'end of the slot 42, thus substantially equalizing the air iniiow at the points indicated.

From the above description, it will be seen that the construction is one which permits the various parts to be readily fabricated and. easily assembled by simply locating the gas-air duct within the lower body ring with its inner end and intermediate sections in registry with the trough-shaped collars 3|, 29, and 30, after which the upper section will be positioned within the confines of the upstanding anges 28' which are thereupon upset to provide overhanging hooklike connections which serve to hold the parts firmly together and in sufliciently close contact to prevent the escape of gas.

The upper section in the will require little, if any, machining other than possibly alight reaming of the burner ports to afford smooth wall surfaces for the discharge of the gas-air mixture.

The gas-air duct may be readily formed from a length of cylindrical tubing, preferably of aluminum, which is configured to provide` thedesired taper and ,flaring head by the method -V shown and described in the Dewey Patent No.

2,265,723, issued December 9, 1941, which permits an extended length of tubing to be so congured as to provide forel plurality of units which are thereafter cut apart and outwardly expanded at the head end to provide the flanges 35. The method of congm'ing the parts, however, forms no part of the present invention and need not, be described in further detail.

form of a die casting By forming the burner from aluminum in the manner described, a light, strong, and servicely produced and which will not be subject to corrosion by contact of gas or otherwise subject to deterioration during the long period of use.

Although 'I have employed the terms ringshaped and cylindrical in defining the con-- figuration ofthe bodysections, it'will be understood that these terms are intended to Acover departures from a truly circular formation and to include ovate and elliptical or polygonal forms adapted to be united in the manner herein described, and that the present invention is directed rather to the means provided for assembling and uniting the sections than to the particular conguration thereof.

1. Ina gas burner of the class described, the combination of a ring-shaped body consisting of upper and lower sections, each of the sections comprising a ring-shaped body wall merginginto inner and outer side walls, the side walls of one of I the sections beingV provided with outwardly extending anges, and the walls of the other section being provided with-hook-shaped flanges engaging the flanges of the first section, the body wall of the upper 'section being provided with a multiplicity of gas-burner ports, the inner and outer side walls of the body sections on one side being provided with half collars having their edges in registering relation and the inner walls of the sections on the opposite side being provided with registering half collars, and a gasair duct extending through the registering half collars rst mentioned Vand having its inner end socketed within the registering half collars last mentioned. y

v2. In a gas burner of the class described, the combination of a ring-shaped body consisting of upper and lower sections, the upper section being.

in the form of a die casting and the lower section being in the form of ametal stamping, each of the sections comprising a ring-shaped body wall merging into inner and outer side walls, the side walls vof the upper section being provided with out` wardly extending flanges, and the sidey walls of the lower section being provided with hookshaped flanges engaging the flanges of theiirst section, thebodywall of the upper section being provided with a multiplicity of gas-burner ports, the inner and outer side walls of the body sections on onerside being provided with half collars having their edges in registering relation and the inner walls of the sections on the opposite side being provided with registering half collars, and a gas-air duct extending through the registering half collars first mentioned and having its inner end socketed within the registering half collars last mentioned.

3. In a gas burner of the class described, the combination of a ring-shaped body consisting of upper and lower sections, each ofthe sections comprising a ring-shaped lbody wall merging into inner and outer side walls, the side walls of one of the sections being provided with outwardly extending anges, and the walls of the other secouter side walls of the body sections on one side being provided with half `collars having their edges in registering relation and the inner walls of the sections on the opposite side being provided with registering half collars, and a gas-air duct extending through the registering half collars first mentioned and having its inner end socketed within the registering half collars last mentioned,

the gas-air duct tapering from its inner socketed end to a progressively smaller diameter at the 1o'- cation where it passes through the registering half collars in the inner and outer walls, and the respective collars being of correspondingly decreasing inner diameter to closelil embrace the gas-air duct at all points'of engagement.

4. In a gas burner of the class described, thecombination of a ring-shaped body consisting of upper and lower sections, the upper section being in the form of a die casting and the lower sec-- tion being in the form of a metal stamping; each of the sections comprising a ring-shaped body Wall merging into inner and outer Side walls, the side walls of the upper section being provided with outwardly extending flanges, and the side walls of the lower section being provided with hookshaped ilanges engaging the flanges of the first section, the body wall of the upper section being provided with a multiplicity of gas-burner ports, theinner and outer side walls of the body sections on one side being provided with half collars having their edges in registering relation and the inner walls of the sections on the opposite side being provided with registering half collars, and a gas-air duct extending through the registering half collars rst mentioned and having its inner end socketed within the registering half collars last mentioned, the gas-air duct tapering from its inner socketed end to a progressively smaller diameter at the location where it passes through the registering half collars in the inner and outer walls. and the respective collars being of corre-4 spondingly decreasing inner diameter. to closely embrace the. gas-air duct at all points of engagement.

Y 5. In a gas burner of the class described, a body consisting of upper and lower sections, the upper section'being in the form of a casting and the lower section being in the form of a metal stamping, each of the sections comprising a: bodywall v merging into inner and outer side walls, the side walls of one of the sections being provided with outwardly extending flanges and the walls of the lvided with registering half -collars, and a gas-fair duct extending through the registering half collars iirst mentioned and having its inner end socketed within the registering half collars last mentioned.

6. In a gas burner of the class described. a

consisting of upper and lower sections, the `upper sectionv being in the form of a casting and the l v lower section being in the form of a metal stamping, each of the sections comprising a body wall merging into inner and outer side walls,y theside walls of one of the sections being provided with outwardly extendingiianges and the walls of the other section being provided with hook-shaped l flanges engagingtheilanges of the first section, the body wall of the upper section being provided with a multiplicity of gas burner ports, the inner and outer side walls ofthe body sections on one side being provided with half collars having their edges in registering relation and the inner walls of the sections on the opposite side being provided with'registering half collars, and a gas-air duct of Venturi shape extending through the registering half collars rst mentioned and having its inner end socketed withix'r the registering half collars last mentioned.

L. DEWEY. 

